feat: upgrade to version 2.0.0-alpha with mainstream dependencies

- Update application version to 2.0.0-alpha
- Update application name to 'Ambient Light Control'
- Upgrade Node.js requirement to >=22.0.0 (current LTS)
- Upgrade pnpm requirement to >=10.0.0 (current stable)
- Update all GitHub Actions workflows to use Node.js 22 and pnpm 10
- Update README.md with current version requirements
- Add comprehensive project metadata to package.json
- Remove obsolete src-tauri/src-tauri directory structure
- Update Cargo.toml with proper project information

.github/workflows/ci.yml

@@ -25,13 +25,13 @@ jobs:
       - name: Setup Node.js
         uses: actions/setup-node@v4
         with:
-          node-version: '20'
+          node-version: '22'
           cache: 'npm'
 
       - name: Setup pnpm
         uses: pnpm/action-setup@v4
         with:
-          version: 8
+          version: 10
 
       - name: Setup Rust
         uses: dtolnay/rust-toolchain@stable
@@ -85,12 +85,12 @@ jobs:
       - name: Setup Node.js
         uses: actions/setup-node@v4
         with:
-          node-version: '20'
+          node-version: '22'
 
       - name: Setup pnpm
         uses: pnpm/action-setup@v4
         with:
-          version: 8
+          version: 10
 
       - name: Install frontend dependencies
         run: pnpm install